Flammable liquid waste burner

ABSTRACT

A flammable liquid waste burner is disclosed for firing in an open area in parallel, provisions being made for atomizing the liquid waste, with booster combustible gas supplied if needed, the flame being directed through pairs of spaced diverging cones in tandem, air being drawn in at the space between the cones and water being sprayed into the burning materials between the cones and at the exit of the second cone. The structure can be turned in accordance with the wind direction to avoid undesired deflection by the wind of the flame.

United States Patent Straitz FLAMMABLE LIQUID WASTE BURNER 3,822,6547/l974 Ghelfi 431/284 [76] Inventor: John F. Straitz, c/o CombustionUnlimited Incorporated, BOX Primary ExammerCarroll B. Dorlty, Jr. 8856Jenkimown Pa. 19117 Attorney, Agent, or FirmZachary T. Wobensmith,

2nd; Zachary T. Wobensmith, Ill [22] Filed: Jan. 14, 1974 [21] Appl.No.: 433,255 [57] ABSTRACT A flammable liquid waste burner is disclosedfor firing 52 us. c1 431/202, 431/4, 431/285, Open area in Parallel,Provisions being made for 431/351, 431/343 atomizing the liquid waste,with booster combustible 51 1111. C1. F23d gas supplied if needed theflame being directed [58] Field of Search 431/202 4 190 284 285 throughpairs of spaced diverging cones in tandem, air 1 11,0 being drawn in atthe space between the cones and water being sprayed into the burningmaterials be- [56] References Cited tween the cones and at the exit ofthe second cone. The structure can be turned in accordance with the 3565 562 ET PATENTS 431/353 wind direction to avoid undesired deflectionby the r1vet 3,797,992 3/1974 Straitz 431/285 wmd Ofthe flame 3,807,9324/1974 Dewald 43l/2 8 Claims, 5 Drawing Figures I -Q- fl 7 r Q 30 5 2 4/1 \.Z5

32 4 3 I/ 62 lil F W- 72 37 l 37 N 80 34 & l /5 r J I ,l /4 /7 1 I I 4/0 l l I FLAMMABLE LIQUID WASTE BURNER BACKGROUND OF THE INVENTION 1.Field of the Invention This invention relates to burners for flammableliquid wastes.

2. Description of the Prior Art It has heretofore been proposed to burnliquid wastes by firing them in an open area. In one device which hasbeen used the waste liquid was delivered to a dual burner unit, wasatomized and the atomized liquid delivered from each burner through aceramic refractory burner and a ceramic refractory muffle block intandem. A gas pilot burner was provided for each burner, the primary airwas controlled by dampers behind the burners and the secondary air wascontrolled by adjusting the air gap between the burner block and themuffle block.

The structures heretofore available, including the unit just referredto, were of limited capacity, had a great tendency to smoke particularlywith certain waste flammable liquids, and being fixedly mounted couldonly be operated with favorable wind direction.

In my prior application for patent for Crude Oil Burner, filed Dec. 15,1972, Ser. No. 315,339, and now US. Pat. No. 3,797,992, there isdisclosed a burner for crude oil utilizing tandem cones and watersprays. The present burner unit utilizes some of the same concepts asare disclosed in that application but for flammable liquids having lowercombustible content and which may be so low that additional fuel isrequired for disposal of the liquid waste.

SUMMARY OF THE INVENTION In accordance with the invention a dual wasteburner unit is provided, preferably having two simultaneously operatedburners side by side, preferably mounted for easy turning in accordancewith existing wind conditions, each burner having a burner head fordelivery of the liquid waste in atomized form and with combustible gassupplied therewith if necessitated by low combustible content of thewaste liquid. A pair of axially aligned spaced diverging frusto-conicalflame confining elements in tandem is provided for each burner unit,each of the conical elements having at its outlet end a water sprayring.

It is the principal object of the invention to provide a flammableliquid waste disposal unit of high capacity and operating withoutsmoke-production.

It is a further object of the invention to provide a flammable liquidwaste disposal unit which can be employed for disposal of waste liquidshaving a wide range of combustible content.

It is a further object of the invention to provide a flammable liquidwaste disposal unit which can be used BRIEF DESCRIPTION OF THE DRAWINGSThe nature and characteristic features of the invention will be morereadily understood from the following description taken in connectionwith the accompanying drawings forming part hereof, in which:

FIG. 1 is a view in elevation of the waste disposal apparatus as seenfrom the front;

FIG. 2 is a vertical central sectional view through one of the burnersand taken approximately on the line 2-2 of FIG. 1;

FIG. 3 is a transverse sectional view, enlarged, taken approximately onthe line 3-3 of FIG. 2;

FIG. 4 is a longitudinal sectional view, enlarged, taken approximatelyon the line 44 of FIG. 3; and

FIG. 5 is a transverse sectional view taken approximately on the line 55of FIG. 4.

It should, of course, be understood that the description and drawingsherein are illustrative merely and that various modifications andchanges can be made in the structure disclosed without departing fromthe spirit of the invention.

Like numerals refer to like parts throughout the several views.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now more particularlyto the drawings a support is provided which can be a tripod having legs11 and horizontal platform 12 for easy movement to the desired place ofuse. The platform has a vertical tubular post 12a secured thereto.

A frame 13, pivotally carried by a vertical pivot sleeve 14 rotatable onthe post 12a, includes front and rear frame plates 15 and 16, side frameplates 17 and bracing webs 18.

The frame 13 has extending upwardly therefrom pairs of supporting posts19, each pair of which has secured thereto a rear or firstfrusto-conical element 20, of metal and preferably of stainless steel.

The element 20 has a rear flange 21 to which an attaching flange 22 of aprimary air register 23 is secured by bolts 24. The flange has acylindrical register housing 25 extending rearwardly therefrom. Thehousing 25 has a register sleeve 26 rotatably mounted thereon, thehousing 25 and sleeve 26 having openings 27 and 28 for adjustment tocontrol the primary air admitted to the interior of the housing 25. Thehousing 25 is closed at its rear end by a wall 30 which supports aburner assembly 32 shown in detail in FIGS. 4 and 5.

The frame 13 has pairs of posts 34 extending upwardly therefrom whichare secured to and support front or second frusto-conical elements 35which are in axial alinement with and spaced forwardly from thefrusto-conical elements 20. The frusto-conical elements 35 are of metaland preferably of stainless steel and preferably have a greater flareangle than the elements 20. In the spaces 36 between the elements 20 and35 metallic strips 37 are provided to direct fluid, including air,entering at this location and to brace the elements 20 and 35.

The burner assembly 32 includes a T-fltting 40 to which gas supply pipe41, controlled by a valve V1 is connected for supply of combustible gasfor combustion. The fitting 40 has spaced gas delivery pipes 42 and 42aextending forwardly therefrom having an end fltting 43 with afrusto-conical end surface 44 having delivery openings 45 therethroughfor diverging flow as hereinafter described.

The fitting 40 has a gland 46 in threaded engagement therewith, thegland having a packing 47 within which an outer burner pipe 48 isslidably mounted. The outer burner pipe 48 at its front end has aconverging fitting or nozzle 49.

Within the outer burner pipe 48 an inner burner pipe 52 is carried thefront of which has a sleeve 53 engaged at its front end within thefitting 49 and having a plurality of openings 54 for delivery of air orsteam to the liquid advancing in the pipe 52 and for converting the sameto a foam like emulsion for discharge through the converging fitting 49at increased velocity.

The pipes 48 and 52 extend into a manifold fitting 55 having an interiorwall 56 separating the interior into a space 57 communicating with theopenings 54 and to which atomizing fluid such as steam or air underpressure is supplied through a supply pipe 58, controlled by a valve V2and a space 60 communicating with the interior of the pipe 52 fordelivery of the combustible liquid waste from a supply pipe 61,controlled by a valve V3. A bypass valve 62 can be provided for deliveryof atomizing fluid directly through the pipe 52 from the rear end forcleaning.

The manifold 55 can be mounted in a bracket 65 having lugs 66 slidableon a threaded rod 67 attached to the fitting 40, nuts 68 holding thelugs 66 and the manifold 55 at the desired position of adjustment of thenozzle 49 with respect to the end fitting 43.

The frusto-conical element 20 at the exterior of the front end thereofis provided with a water supply ring 70 having a water supply connection71 connected thereto with control valve V3, and having a plurality ofsmall water delivery pipes 72 extending therefrom with deflectors attheir ends delivering water in small streams or in spray form inwardlyat the exit end of the frusto-conical element 20.

The frusto-conical element 35 at the exterior of the front end thereofis provided with a water supply ring 73 having a water supply pipe 74connected thereto with control valve V4 and having a plurality of smallwater delivery pipes 75 extending therefrom with deflectors at theirends for delivering water in small streams or in spray form convergingin the range from to 30 degrees at the exit end of the frusto-conicalelement 35. V A

A gas pilot 80 is provided for supplying an igniting flame at the spacebetween the frusto-conical elements and 35, the pilot 80 mounted on theframe 13.

The mode of operation will now be pointed out.

The flammable liquid waste delivered through the pipe 61 is deliveredthrough the manifold 55 in inner burner pipe 52 and at the same timeatomizing fluid is delivered through the pipe 58 to the space 57 andthence through the openings 54 to provide a foam like emulsion of theliquid waste as it is discharged from the nozzle 49 the exit velocitybeing increased by the progressive decrease in diameter of theconverging fitting 49. The delivery of the liquid waste in this mannerresults in better contact with the air and better combustion resultingin the elimination of smoke.

If the combustible content is sufflcient the combustible material,supplied with primary combustion air induced through the register 23 bythe discharge of fluent combustible material may burn without assistanceas it advances successively through the frusto-conical elements 20 and35.

If the combustible content of the waste liquid is not As the combustiblematerials from the nozzle 49 or from both the nozzle 49 and the fitting43 advance forwardly they burn, with additional air being induced at thespaces between elements 20 and 35.

At the same time and place, water is discharged from the pipes 72 ascontrolled by the valve V3, inwardly. the water introduction aiding inthe addition of air to the burning materials and inhibiting smokeformation.

Water is also discharged from the pipes as controlled by the valve V4,inwardly, the water introduction also aiding in the addition of air atthis location and reducing smoke formation.

I claim:

1. Apparatus for burning flammable liquid waste comprising a support,said support comprising a pivotally mounted frame for facing saidhousing and said cones in a selected substantially horizontal direction,

a housing,

said housing having means for controlling the delivery of air thereinto,

a burner assembly carried by said housing,

said burner assembly comprising members for supplying flammable liquidwaste forwardly with respect to said housing and members for supplyingsupplemental fuel in close relation to the waste delivered from saidfirst mentioned burner assembly members,

a rear cone connected at its rear end to said housing and through whichcombustible materials from said burner assembly and air from saidhousing are delivered for burning therein,

said rear cone and said housing being carried by said support,

said rear cone being larger at its forward end,

a front cone carried on said support extending forwardly from said rearcone in axial alignment therewith,

said front cone at its rear end being spaced from the front end of saidrear cone to provide an air entry space and being larger at its frontend,

a rear water spray ring contiguous to the front end of the rear cone andhaving members for directing water forwardly and inwardly into the spacebetween said cones and into the flame therein, and

a front water spray ring contiguous to the front end of the front coneand having members for directing water forwardly and inwardly beyond thefront end of said front cone and into the flame advancing therebeyond.

2. Apparatus for burning flammable liquid waste as defined in claim 1which comprises a plurality of devices as defined in claim I mounted onsaid support and facing in the same direction.

3. Apparatus for burning flammable liquid waste as defined in claim 1 inwhich said second mentioned members include a connection to a supply ofcombustible gas.

4. Apparatus for burning flammable liquid waste as defined in claim 3 inwhich said second mentioned members are positioned to supply combustiblegas into said rear cone in surrounding relation to the flammable liquidwaste.

5. Apparatus for burning flammable liquid waste as defined in claim 1 inwhich 5 6 the longitudinal axes of said cones are horizontally saidburner assembly members are relatively adjustdisposed. able for varyingthe relationship of delivery of the 6. Apparatus for burning flammableliquid waste as supplemental fuel to the delivery of the liquid definedin claim 1 in which waste in spray form.

a pilot is provided for ignition at the space between 5 8. Apparatus forburning flammable liquid waste as said cones. defined in claim 1 inwhich 7. Apparatus for burning flammable liquid waste as said cones areof metal. defined in claim 1 in which UNITED STATES PATENT OFFICECERTIFICATE OF CORRECTION Patent 3 ,86l,857 Date-d January 21, 1975Inventor-( John F. Straitz, III

It is certified that error appears in the above-identified patent andthat said Letters Patent are hereby corrected as shown below:

In the printed heading Identify the inventor as John F. Straitz, III.

Identify the assign'ee, Combustion Unlimited Incorporated,

a corporation of Pennsylvania, P. O. Box 8856, Elkins Park,

Pennsylvania 19117.

Column 3 Line 45, after "80" "being" should be inserted.

Signed and sealed this 6th day of May 1975.

(SEAL) Attest:

C. MARSHALL DANN RUTH C. MASON Commissioner of Patents Attesting Officerand Trademarks USCOMM-DC 60376-5 69 FORM F'O-105O (10-69) n .5.GOVERNMENT PRINTING OFFICE: I959 O-366-334.

1. Apparatus for burning flammable liquid waste comprising a support,said support comprising a pivotally mounted frame for facing saidhousing and said cones in a selected substantially horizontal direction,a housing, said housing having means for controlling the delivery of airthereinto, a burner assembly carried by said housing, said burnerassembly comprising members for supplying flammable liquid wasteforwardly with respect to said housing and members for supplyingsupplemental fuel in close relation to the waste delivered from saidfirst mentioned burner assembly members, a rear cone connected at itsrear end to said housing and through which combustible materials fromsaid burner assembly and air from said housing are delivered for burningtherein, said rear cone and said housing being carried by said support,said rear cone being larger at its forward end, a front cone carried onsaid support extending forwardly from said rear cone in axial alignmenttherewith, said front cone at its rear end being spaced from the frontend of said rear cone to provide an air entry space and being larger atits front end, a rear water spray ring contiguous to the front end ofthe rear cone and having members for directing water forwardly andinwardly into the space between said cones and into the flame therein,and a front water spray ring contiguous to the front end of the frontcone and having members for directing water forwardly and inwardlybeyond the front end of said front cone and into the flame advancingtherebeyond.
 2. Apparatus for burning flammable liquid waste as definedin claim 1 which comprises a plurality of devices as defined in claim 1mounted on said support and facing in the same direction.
 3. Apparatusfor burning flammable liquid waste as defined in claim 1 in which saidsecond mentioned members include a connection to a supply of combustiblegas.
 4. Apparatus for burning flammable liquid waste as defined in claim3 in which said second mentioned members are positioned to supplycombustible gas into said rear cone in surrounding relation to theflammable liquid waste.
 5. Apparatus for burning flammable liquid wasteas defined in claim 1 in which the longitudinal axes of said cones arehorizontally disposed.
 6. Apparatus for burning flammable liquid wasteas defined in claim 1 in which a pilot is provided for ignition at thespace between said cones.
 7. Apparatus for burning flammable liquidwaste as defined in claim 1 in which said burner assembly members arerelatively adjustable for varying the relationship of delivery of thesupplemental fuel to the delivery of the liquid waste in spray form. 8.Apparatus for burning flammable liquid waste as defined in claim 1 inwhich said cones are of metal.